Neodymium Iron Boron Magnets ndi amodzi mwa maginito amphamvu kwambiri azamalonda omwe alipo masiku ano. Maginito osowa padziko lapansi awa amatha kukhala amphamvu kuwirikiza ka 10 kuposa maginito amphamvu kwambiri a ceramic. Maginito a NdFeB amapangidwa pogwiritsa ntchito imodzi mwamagulu awiri a njira, maginito omangika (kuponderezana, jekeseni, kutulutsa kapena kuumba kalendala), ndi maginito a sintered (ufa zitsulo, ndondomeko ya PM). Maginito a NdFeB nthawi zambiri amagwiritsidwa ntchito pazinthu zomwe zimafunikira maginito amphamvu okhazikika monga ma hard disk drive pamakompyuta, ma mota amagetsi pazida zopanda zingwe, ndi zomangira. Pazachipatala ntchito zatsopano za maginito amphamvuzi zikutuluka. Mwachitsanzo, navigation ya catheter, pomwe maginito amatha kuphatikizidwa kunsonga ya katheta ndikuwongoleredwa ndi maginito akunja kuti athe kuwongolera ndi kupotoza luso.
Ntchito zina m'zachipatala ndikuyambitsa makina otsegula a maginito a resonance imaging (MRI) omwe amagwiritsidwa ntchito kupanga mapu ndi zithunzi za anatomy, m'malo mwa maginito akuluakulu omwe nthawi zambiri amagwiritsa ntchito ma waya kuti apange maginito. Zomwe zimagwiritsidwa ntchito pazida zamankhwala zimaphatikizapo, zoyikapo zazitali komanso zazifupi, komanso zida zowononga pang'ono. Ntchito zina zowononga pang'ono za maginito a neodymium iron boron ndi ma endoscopic ang'onoang'ono azinthu zambiri kuphatikiza; gastroesophageal, m'mimba, mafupa, minofu ndi mafupa, mtima, ndi mitsempha.
Maginito a Ferrite, maginito a neodymium kapena maziko a maginito amagwiritsidwa ntchito zosiyanasiyana paukadaulo, m'makampani komanso zamankhwala. M'pofunika kupereka maginito chitetezo pamwamba pa dzimbiri, "kuphimba" kwa maginito. Kuyika maginito a neodymium ndi njira yofunika kwambiri yotetezera maginito kuti isawonongeke. The gawo lapansi NdFeB (Neodymium, Iron, Boron) adzakhala oxidize mwamsanga popanda wosanjikiza zoteteza. Pansipa pali mndandanda wa zokutira / zokutira ndi nthenga zake kuti mufotokozere.
| Chithandizo cha Pamwamba | ||||||
| Kupaka | Kupaka Makulidwe (m) | Mtundu | Kutentha kwa Ntchito (℃) | PCT (h) | SST (h) | Mawonekedwe |
| Blue-White Zinc | 5-20 | Blue-White | ≤160 | - | ≥48 | Kupaka kwa anodic |
| Mtundu wa Zinc | 5-20 | Mtundu wa utawaleza | ≤160 | - | ≥72 | Kupaka kwa anodic |
| Ni | 10-20 | Siliva | ≤390 | ≥96 | ≥12 | Kukana kutentha kwakukulu |
| Ni+Cu+Ni | 10-30 | Siliva | ≤390 | ≥96 | ≥48 | Kukana kutentha kwakukulu |
| Vuta aluminizing | 5-25 | Siliva | ≤390 | ≥96 | ≥96 | Kuphatikiza kwabwino, kukana kutentha kwambiri |
| Electrophoretic epoxy | 15-25 | Wakuda | ≤200 | - | ≥360 | Insulation, kusasinthasintha kwabwino kwa makulidwe |
| Ndi+Cu+Epoxy | 20-40 | Wakuda | ≤200 | ≥480 | ≥720 | Insulation, kusasinthasintha kwabwino kwa makulidwe |
| Aluminium + Epoxy | 20-40 | Wakuda | ≤200 | ≥480 | ≥504 | Insulation, kukana kwambiri mchere kutsitsi |
| Epoxy spray | 10-30 | Black, Gray | ≤200 | ≥192 | ≥504 | Insulation, kutentha kwambiri kukana |
| Phosphating | - | - | ≤250 | - | ≥0.5 | Mtengo wotsika |
| Passivation | - | - | ≤250 | - | ≥0.5 | Mtengo wotsika, wokonda chilengedwe |
| Lumikizanani ndi akatswiri athu pazovala zina! | ||||||
Kupaka kwa NiCuNi: Chophimba cha nickel chimapangidwa ndi zigawo zitatu, nickel-copper-nickel. Kupaka kwamtunduwu ndi komwe kumagwiritsidwa ntchito kwambiri ndipo kumapereka chitetezo ku dzimbiri la maginito panja. Ndalama zoyendetsera ntchito ndizotsika. Kutentha kwakukulu kogwira ntchito ndi pafupifupi 220-240ºC (malingana ndi kutentha kwakukulu kwa maginito). Kupaka kwamtunduwu kumagwiritsidwa ntchito m'mainjini, ma jenereta, zida zamankhwala, masensa, ntchito zamagalimoto, kusungirako, njira zowonda zamakanema ndi mapampu.
Nickel wakuda: Zomwe zimapangidwira izi ndizofanana ndi zokutira za nickel, ndi kusiyana komwe kumapangidwira njira yowonjezera, msonkhano wakuda wa nickel. Katundu ndi ofanana ndi wamba nickel plating; makamaka kuti chophimbachi chimagwiritsidwa ntchito pazinthu zomwe zimafuna kuti mawonekedwe a chidutswacho asakhale owala.
Golide: Chophimba chamtunduwu nthawi zambiri chimagwiritsidwa ntchito m'chipatala komanso ndi choyenera kugwiritsidwa ntchito pokhudzana ndi thupi la munthu. Pali chivomerezo chochokera ku FDA (Food and Drug Administration). Pansi pa zokutira golide pali gawo laling'ono la Ni-Cu-Ni. Kutentha kwakukulu kogwira ntchito kumakhalanso pafupifupi 200 ° C. Kuwonjezera pa munda wa mankhwala, golide plating amagwiritsidwanso ntchito zodzikongoletsera ndi zokongoletsera.
Zinc: Ngati kutentha kwakukulu kogwira ntchito kuli kosakwana 120 ° C, zokutira zamtunduwu ndizokwanira. Mtengo wake ndi wotsika ndipo maginito amatetezedwa ku dzimbiri panja. Itha kumamatidwa kuchitsulo, ngakhale zomatira zopangidwa mwapadera ziyenera kugwiritsidwa ntchito. Kupaka kwa zinki kuli koyenera malinga ngati zotchinga zoteteza maginito ndizochepa komanso kutentha kocheperako kumapitilira.
Parylene: Chophimba ichi chimavomerezedwanso ndi FDA. Chifukwa chake, amagwiritsidwa ntchito pazachipatala m'thupi la munthu. Kutentha kwakukulu kwa ntchito kumakhala pafupifupi 150 ° C. Mapangidwe a maselo amakhala ndi ma hydrocarbon opangidwa ndi mphete omwe ali ndi H, Cl ndi F. Malingana ndi mapangidwe a maselo, mitundu yosiyanasiyana imasiyanitsidwa: Parylene N, Parylene C, Parylene D ndi Parylene. HT.
Epoxy: Chophimba chomwe chimapereka chotchinga chabwino kwambiri polimbana ndi mchere ndi madzi. Pali kumamatira kwabwino kwambiri kuchitsulo, ngati maginito amamatira ndi zomatira zapadera zoyenera maginito. Kutentha kwakukulu kogwira ntchito kumakhala pafupifupi 150 ° C. Zovala za epoxy nthawi zambiri zimakhala zakuda, koma zimatha kukhala zoyera. Mapulogalamu atha kupezeka m'gawo lanyanja, mainjini, masensa, katundu wa ogula ndi gawo lamagalimoto.
Maginito obayidwa mu pulasitiki: kapena amatchedwanso over-moulded. Chikhalidwe chake chachikulu ndi chitetezo chake chabwino kwambiri cha maginito kuti asagwe, kuwononga ndi dzimbiri. Chophimba chotetezera chimapereka chitetezo ku madzi ndi mchere. Kutentha kwakukulu kogwira ntchito kumadalira pulasitiki yogwiritsidwa ntchito (acrylonitrile-butadiene-styrene).
Yopangidwa PTFE (Teflon): Monga jekeseni / zokutira pulasitiki imaperekanso chitetezo chabwino kwambiri cha maginito kuti asasweka, kukhudzidwa ndi dzimbiri. Maginito amatetezedwa ku chinyezi, madzi ndi mchere. Kutentha kwakukulu kogwira ntchito kuli pafupi ndi 250 ° C. Chophimba ichi chimagwiritsidwa ntchito makamaka m'mafakitale azachipatala komanso m'makampani ogulitsa zakudya.
Mphira: Chophimba cha rabara chimateteza bwino kuti zisasweka ndi kukhudzidwa ndikuchepetsa dzimbiri. Zida za rabara zimapanga kukana kwabwino kwambiri pazitsulo zachitsulo. Kutentha kwakukulu kogwira ntchito kuli pafupi ndi 80-100 ° C. Maginito a mphika okhala ndi mphira wa rabara ndi zinthu zoonekeratu komanso zogwiritsidwa ntchito kwambiri.
Timapatsa makasitomala athu upangiri waukadaulo ndi mayankho amomwe mungatetezere maginito anu ndikugwiritsa ntchito bwino maginito. Lumikizanani nafe ndipo tidzakhala okondwa kuyankha funso lanu.
